op columbus



I Sept. 6, 1932. F.-D. PFENING ET AL 1,876,512

LIQUID MEASURING AND DISPENSING APPARATUS Sept. 6, 1932. F. D. PFI-:NINGET AL '1,876,512

LIQUID MEASURING ANDDISPENSING APPARATUS Filed sept. 9, 1930 2sheets-sneet- 2 H. PfenllryJl:

Patented Slept. f 6, 1932 i UNITED STATES PATENT oFFlCE FREDERIC '.D.PFENING HENRY PFENING, JB., OF COLUMBUS, OHIO, ASSIGNORB '1.0

' .THE FRED D. MENING coxrm, o1` co LUMBUS, OHIO, A CORPORATION F OHIOLIQUID II'EASUBING AND pIsrENsINe arrarwrus lApplication illed September9, 41930. Serial No. 480,680.

This invention relates to automatic liquid measuring apparatus. Anobject of the invention resides in the provision of a flow line throughwhichthe liquid to be measured 1s positively advanced, the passage ofthe liquid through the line being subject to the regulation of anelectrically operated valve, which is connected in .circuit with the Howindicating mechanism of a liquid flow recording meter, whereby when saidmechanism assumes certain predetermined operating positions, v followingthe passage of a desired quantity of liquid through the meter, the saidregulating valve automatically is closed to arrest, or otherwisecontrol, further liquid flow through the line. y

It is another object of the invention to provide such automatic` meansfor measuring liquid flow with circuit controlling devices by which theoperation of 'said means may be controlled from a relatively remotepoint, for

E the urpose of eecting successive deliveries of esired volumes ofliquid without requiring the attendant to be stationed immediatelyadjacentyto the apparatus.

In our prior Patent No. 1,775,293 we have disclosed liquid measuringapparatus subject tofthecontrol of an electric circuit, which, in turn,is controlled by the operation of an associateflow meter .through whichthe liquid to be measured passes. However, in our earlier disclosure theoperation is vsuch that it is necessary for the attendant to adjust the'indicating hand of the meter by a manual operation for eachy consecutivemeasuring oper-- ation of the meter. In practice, this -has causedcertain inconvenience due to the often remote location of the -meter romthe point o outstanding object oft-fthe present invention to control'the operation of the meter from a remote-point ,with respect to saidmeter in a substantiallyv automatic` manner, avoiding 'specifically therepeatedhand adjustments `'of theA indicating dial'- -heretoforeutilized, and placing the apparatus in'condition so that itsoperation'may be conveniently effected at the point of use or deliveryof the liquid.

of use of the 'liquid and, therefore, it is an `prising a through w icha iquid .is passed,measured It lis another important object of the presient invention to provide for improved regulation of the temperature ofthe llquids passed through the measuring system by the rovision ofa'mixing valve through which liquids possessing refrigerated, normal andelevated temperatures are passed and intermingled, if desired, to obtaintemperature regulation of the liquid which is delivered by the systemand automatically measured thereby.

With these and other objects in view, which will appear as thedescription roceeds, the invention consists in the novel) featuresofconstruction, combinations of elements and arrangements of partsherein fully described and pointed out in the ap nded claims. In theaccompanying rawings: Figure 1 is a view in side elevation of theautomatic liquid measuring apparatus com- ,prising the presentinvention, the electrical connections and circuits utilized inconjunctiql therewith being shown diagrammati- Ca Y,

Figure 2 is a front view partly in vertical section of the dial of theflow meter and disclosing the circuit controlling means carriedinconnection therewith,

Fi re 3 is a vertical longitudinal sectiona view taken through the dialon the line 3-3 of Figure 2,

Fi re 4 is a transverse sectional view on the line 4-4 of Figure 2, andFigure 5 is a detail horizontal sectional view. Y

4 Fig. 6 is a section of the mixing valve.

Fig. 7is a section along line 7-7 of Fi .6.

Fig. 8 is a section o one of the va ves shown at 5 in Fig. 1.@ l v lFig. 9 is a section along lineA9-9 of Fig, 8.

Referring to the drawings, the numeral 1 designates generally aliquid-flowA line c om- :1

luralit of 'related pipe lsections temperatures. .p Heretofore theadditionl of v water to dough mixes has n ot been carried.' out'withanydegree of certainty, buckets, 100

pails and other rough measuring instruments being generally used toeffect the addition of water at an approximately desired temperature tobakery mixes, and it is to provide a more accurate and readilycontrolled system for delivering water in such establishments that thepresent invention finds a iield of use. A

Water enters the flow line through a plurality of pipes indicated at2, 3and 4 under, for example, city main pressure, although other pressuresmay beused. Through the pipe 2 the 'water is of a sub-normal orrefrigerated temperature, having previously passed through cooling orchilling apparatus (not shown) to obtain the desired temperature.

Water'iowing through the pipe 3 is at a.

normal water main temperature, while the water flowing through'the' pipe4 is heated by suitable apparatus to a desired elevated temperature.'The pipes 2, 3 and are each equipped with a check valve 5 which limitsthe flow of the liquid through said pipes to the direction indicated bvthe arrow A.

The lower ends of the ipes 2, 3 and e enterbranch nipples 6 forme with acircular cassu stantially circular valve member 8. This in which ispositioned a rotatable and member comprises a collar 49 which closelyengages and conforms with the curvature of the valve chamber 10 formedin said casing.

'lhe collar 9 is provided 4along its upper por-l tion with a slot 11which is of such length l that it may bridge or register with at leasttwo oi the nipples 6 or may be positioned to register with but one osaid nipples. By this arrangement water may pass through the valvemember at the temperature pre-1 H vailing in anyone of the pipes 2, 3and 4, or by registering with a plurality of suchni ples a desiredaverage temperature ot t e liquid passing from the valve member may beobtained.4

' 'lhe valve member 8 includes an axial stu-d 12 journaled for rotationin a packed bearing 13 formed on the rear surface of the casing 7. rlhisstud is connected at its outer end with an operating handle 14: providedwith an indicating pointer 15 Inova le over a legend containing surface16 provided upon the back wall ofthe casing 7, as shown in Figure 1.4 B

noting the positions of the pointer 15 wit relation to the sur-face 16the attendant isv informed generally as to the temperature of the waterpassing through the mixing valve or when the valve is closed to arrestliquid flow. rlhe positions of the rotatable valve member 8 aremaintained b the provision of a spring 17 arranged axially in the mixingvalve. rlhis spring surrounds a pin 18, which is carried by theremovable front wall 19 of the casing and the stud 12. 'llhe spring 17presses at one end on a fixed collar formed with the pin 18 and at itsother end on a loose collar which is slidably carried by saldi pinnavarra `21 connected' with the back of the casing 7.

'llhe screw 21 by reason of its positions in the slot limits the extentof rotation of said valvemember. The liquid after entering the casingleaves the latter by way of a port 22 formed in the bottom of the collar9 and is vdischarged from the mixing valve into the How line 1.Manifestly, by means of this valve mechanism a desired temperature ofthe liquid entering the flow line is obtainable and thistemperature'possesses a range between the extremes ofA temperature ofthe liquids entering thasystem through the lines 2, .3 and 1. e

Disposed in the ow line 1 is a casing 23 whichA includes inlet andoutlet chambers 24 I and 25, respectively. These chambers are separatedby a strainer 26adapted to remove undesiredslid matter or sediment fromthe liquid. The bottom of the casing 23 is formed with a drain valve 27.Also carried by the casing 23 is a temperature responsive element 28which is connected with a visible tempera- .Y ture indicator 29. As willbe later described,

this temperature indicator formsa part of .an electrical circuit forgoverning liquid-flow throughthe line 1. so that not only does theindicator serve to denote the temperature yof the liquid passing throughthe line 1, but, in addition, it serves in the capacity ot an automaticswitch for arresting such liquid How when a certain predetermined peaktemperature has been obtained.

rlhe liquid vdischarged. from the outlet n chamber of the casing 23continues on through the dow line and passes through the rotor chamber30 of a liquid `dow meter 31. As usual the meter 331 has positioned inthe chamberB() a rotor 32 which is rotated by the passage of the liquidthrough the chamber 30. The rotation or operation of the rotor 32 ee'ctsthe rotation of an indicator shaft 33, which has mounted on its outerend a hand 34 movable over a graduated stationary dial 35. rll`his dialhas mounted thereon graduations which indicate pounds in liquid, althouh other arbitrary units of measurement may lie utilized, depending uponthe specific uses of the apparatus.

Alfter the liqui 1 and passes a' solenoid or magnetic valve 36. Thisvalve is connected in circuit with the meter 31 and the operation4 ofthe mech- (passing through the flow meter"3'1. continues its iiowthrough the line by further flow of liquid through the discharge portion37 of the line 1, and it is an outstanding feature of the presentinvention to. provi-de improved circuit controlling means between themeter and the solenoid valve in regulating liquid fiow through and fromthe line 1;

Referring now more particularly to Figure 1, electrical current entersthe trunk line 38 and then passes by way of a line 39 to a4 movableswitch finger 40 carried by the dial casing 41 of the meter. The fingery40 is normally in contact with a stationary contact finger 42 alsocarried by the casing 41, and from the finger 42 a lead 43 connects saidstationary finger with the temperature indicator 29. Within certaintemperature limits current passes through the indicator 29 and flows byway of a line 44 to a coil 45. After passing through the coil 45 thecurrent passes through a line 46 and through a normally closed stopswitch 47 through a starting switch 48 which usually is of the pressbutton type and requires manual op-l eration against a spring pressureyto effect its closure. From the switch button 48 the current then passesby wa of a line 49 to the return trunk line 50 of t e circuit. It willthus be observed that the closing of the switch 48 results in excitingthe field of the `coil 45 which,'in lturn, results in attracting anarmature 51, moving the `latter from its normal opened to acircuit-closing position and which therebyA energizes the coil of thesolenoid valve 36. This is accomplished by. means of the leadline 52which is connected With the line 39 and passes to the coil 53 of thesolenoid valve. From the coil 53 a line 54`extends to the armature 51and since the armature is in a circuit closing position the currentpasses into a pressure line 55 which is connected with the return lines49yand 50. Since the startingbutton 48 assumes an open positionimmediately after its release, the

current flowing from the line 55" must pass to the return trunk 50, Thusthe pressing of the button 48 energizes the coil 53 of thesoleinoidvalve, and results in the opening ofsaid valve and the maintenance ofliquid flow through the line 1. i

' To'r'tain the coil 45 energized after the button 48 has been released,current,` in addition to flowing through the line 52,is also e shuntedthrough the line 43, the ltemperature indicator 29 and the line 44 tothe coil 45.

" This shunt circuit'passes through the coil 45 and into the line 46,-and ,thence through the stop button 47 and through a short lead 56 tothe line 54 and thence through the armature 51 to the lines 49 and 50,In this manner the solenoid valve is maintained energized followingtheinitial closing of the circuit governed by the button 48 and it is notnecessaryto maintain finger pressure on the 05 button 48-`to keep thesolenoidivalve energized.

In order to automaticallybreak the cir- I cuit leading to the solenoidvalve, following the passage of a predetermined quantity of liquidthrough the flow line, the indicator shaft 33 of the flow meter hasmounted there- .jon a split frictional sleeve 57, .which carries atitsouter end the indicator hand 34. Be-

hind the dial 35 the sleeve 57 is formed with an arm 58 whichisrotatable with the Shaft 33. This arm is of Isufficient length thatwhen is to maintain its contact with the stationary finger 42.

' Since the dial shaft 33 is positively rotated from the rotor" 32itfollows that when the arm 58 has been rotated to a predeterminedextentit will contact with the spring strip 59 thereby moving the finger 40from en-v gageln'ent with the stationary finger 42 'to rea of the coil45. This permits-the arma-ture 51 to assume an open position so that thecircuit in which the coil 53 ofthe solenoid valve is situated is alsoopen. `The valve 36 then automatically assumes a vposition of closureunder spring 4or otherpressure to arrest liquid flow through the line.-It will be understood that thestrip 59 is sufficiently resilient sothat when the upper end of the arm 58 is engaged therewith the movablefinger 40 will move with said arm'until the finger 40 engages with astationary stop 60. The strip 59 then flexes to permit the arm 58 tomove past the same. When the finger 40 is thus freed from engagementwith the arm 58 it automatically returns to its normal position incontact with the finger 42. Thus the dial hand 34 may be movedto anyposition on the graduated` surface of the dial' the circuit which.controls the exciting starting button 48 may be pressed.' This lresults, as previously explained, in the excitation of the solenoidvalve and the consequent opening of said valve to admitl of liquid flowthrough the system. The passage of such liquid revolves the rotor 32,the hand l 34- and the arm 58 sothat when the hand reaches a zeropositionon the graduated surface 61 the'upper end ofthe arm 58 engagesagain with'the spring strip 59 tomove the finger 40 into engagement withthe finger 42, thus de-energiz'ing the solenoid valve and automaticallyarresting liquid flow through the system. lf for any reason the solenoidI a bell or other audible or visual signal 63,

and the return side of this signal is connected with the outgoing line49. Thus if the valve 36 should stick or fail to close for any otherreason, in addition a signal will be provided notifying the attendant ofthe situation `topermit proper adjustments to be made. The system,ofcourse, is also under the controlof the stop switch 47 and if for anyreason it is desired to stop the operation of the same at any point,-the mere opening of-'the switch 47 will instantly stop liquid.

flow through the system.

It is quite d'esirable'in a system of this character to be able tocontrol the operation of the meter from a distance.' Thus in a bakeryestablishment, for example, the aparatus consisting` of the mixing valve7, the

ow meter, the temperature indicator and the solenoid valve andassociated piping is commonly disposed in a single casing (not shown)located at an elevated point on the Wall of a room. The attendant 1at amachine using successive quantities of water of predetermined weightwould have his operations seriously hampered by adjusting manually thehand 34 for each operation of the system. To avoid this condition wehave collector rings and a lead line 66 through the medium of a brush 67engages with one of said rings. The line 66 is connected with thepositive trunk line 38 and a manually operated switch button 68 isdisposed in theline 66 to control passage oit-current therethrough. Alead 70 is connected with one of the rings j 65 and with a resilientswitch member 72 lead 74 extends from the stationary' switchl aevaeiamember 73 to the other of the collector rings y 65 and from this lattercollector ring alead line 75 extends to an electric motor 76, and areturn line 77 leads from said motor to the negative trunk line 50. 1

The motor 76 has its armature shaft provided with a worm 78 whichvmeshes with a worm gear 79 loosely mounted on the dial A shaft 33.rlhis worm gear has one side thereof provided with a recess 80 in whichis positioned a movable dog or pawl 8l` normally pressed outwardly by aspring 82, the-outthe arm 58 at any desired position, the rear surfaceof the vdial 35 is provided with a plurality of brackets 84 whichsupport for rotation upon the inner surface ofthe dial and around theaxis provided by the shaft 33 an adjustable contact ring 85'. This ringor gear has its outer edge provided with gear teeth 86 which mesh withthe teeth of a pinion 87 also arranged on ,the inner side of the dial35.

The pinion 87 is carried by afstud shaft 88 which is adapted to berotated by a key or otherwise in order that when so rotated theoperating positions'of the ring 85 may be varied or adjusted at will.The ring 85 isalso provided with graduations 89 indicating pounds orother units oit measurement and The graduations 89 are viewable throughav slot 90 formed'in the front face of the dial. The ring 85 carries afixed pin 91 whichf is arranged in the path of the resilient switchmember 72, so that when the arm 58 is revolved by the motor 76 to apredetermined eatent the arm 58 will contactwith the pin 91 to cause aseparation between the members 72 and 73 and the opening thereof ot themotor circuit 66. The line 66 may be provided with a visual signal 92 tonotify the attendant when the circuit 'leading to themotor 76 is closedand when it is open.

. With this mechanism it will be assumed, for example, that an attendantrequires repeated deliveries of 300 pounds of liquid. This is often the-case in bakery establishments Where such successive deliveries ofpredetermined quantities of liquid are needed and there is little if anyvariation in theweight of the liquid deliveries required. To accomplishsuch successive deliveries the ring 85 is rotated through the pinion 87until the numerals 300 on the graduated surface 89 appear in the centerportion of the slot 90. This results in moving the pin 91 a considerabledistance from the normal upright posicorresponding to the graduations 6lon the f dial 35. associated with the flow meter automaticv lll@ 4switch 68 results in energizing the motor 76 S11 so that rotary motionw1`ll be imparted to the tion of the arm 58. The operating switch- 68 isthen closed and it should be said' at this time that the switch 68 isarranged immediately adjacent to the operatorand may be spaced at anydesired distance from the balance of the apparatus. The closing of thethe switch button 48 is'closed which results in the energizing of thesolenoid valve 36 and the desired passage of liquid through the system.After 300 pounds, or` other arbitrary unit of measurement, of liquid haspassed through the system, the arm 58 contacts with the finger 40 andbreaks the solenoid circuit, thus completing the cycle of operation.yThe v sleeve 57 is split in order that it may turn on I 44, therebyautomatically de-energizing passage of through a liquid flow linewhereln prov1s1on for the purpose of expediting the shaft 33 when thelatter is'held stationary during the period of closure of thevalve 36and particularly when the arm 58 1s turned by the pawl 81 to reset theswitch mechanism.

In view of the foregoing it will be seen that the present inventionprovldes 'for the liquid of desired temperature is made in the flow linefor'automatically preidetermining; the quantity of liquid passingtherethrough for any given operation.

the temperature of the liquidl should exceed certain limits, theindicator 29 interrupts the passage of current the The solenoid valveand arresting liquid flow.

construction of the circuit controlling mecha-` nisrn employed inconjunction'with the flow meter is such as to provide for manualoperation so that the liquid quantities passed through ation or if suchliquid quantities are the same and are successively required the circuitcontrolling mechanism maybe automatically operated from a distance forconvenience and operations on adjusting the ring 85 any desired number opounds of liq'- uid may be passed throughthe system varying from zero to400 and this, of course, is subject to variation and apparatus havinglarger capacities or intended for different fields of use.

What is claimed is:

A1. In liquid measuring and dispensing apparatus, a liquid fiow line, amagnetic valve arranged in said How line for controlling the passage ofliquid therethrough, a iow regis.-

through the lines 43 Iandthe system may vary with each oper'-`excitation of said tering meter connected with'said Aflow line, 'l

switch mechanism actuated by said'fiow'meter for controlling theoperation of said valve,

and means includinga motor remotely con` trolled for resetting saidswitch 'mechanism -subsequent to a given flow of liquid throughloperative with said meter for controlling the c energizing andde-energizing of said magy netic valve 1n response to predeterminedoperation ofsaid meter through the rotation of said member, and manuallycontrolled motor i operated means for restoring said devices to aselected initial position of operation after j leach cycle of operationof the meter.

3. In liquid measuringand dispensing apparatus, a liquid flow line,- asolenoid valve positioned in said flow line for regulating liquidpassage therethrough, a registering meter arranged in said flow line 'inadvance of said solenoid valve, relatively separable normally engagingcontacts carried in conjunction lwith said meter, a starting circuitpassmg through said contacts, a magnetic primary field' in said startinglcircuit, erated switch in saldvstarting circuit operable whenI closedto initially excite said field, a main circuit passing through the coilofsaid solenoid valve, a lrelay switch in said main circuit responsiveto the excitation of said field to close said main circuit whereby toenergize the coilof said solenoid valve to admit of liquid passagethrough said line, and rotatable means actuated by said meter followingpredetermined passage of liquid through said line to separate said'contacts where y to open said main circuit and to thereby effect theclosure of the solenoid valve.

4'. In liquid measuring and dispensing apparatus, a liquid flow llne, asolenoid valve positioned in said flow line to govern liquid passagetherethrough, a flow registering meter separa le normally engagingcontacts carriedin conjunction with vsaid meter, a starting circuitpassing through said contacts and including a localized magnetic fieldand a manually operated switch, the closing of saidl switch effectinginitial excitation of said field, a main cirguit passing the coilof'said solenoid valve, a relay switch responsive to the field tov closesaid main circuit, a secondary circuit operable upon" the closing ofsaid relay switch to maintain the excitation of said field independentlyof said starting circuit, and a circuit breaking devicepositioned-insaid flow line, relatively* a manually opcoil ot saidsolenoid valve,

disposed in said flow line, normally engaging separable contacts carriedin connection with said dow meter, a starting circuit passing throughsaid contacts, a localized magnetic ield in said starting circuit, amanually operated switch iii said starting circuit for initiallyenergizing said field, a main circuit including the coil ol saidsolenoid valve, a rela switch in said main circuit responsive to theexcitation of said field to close said main circuit, a third circuitsaid and a movable circuit breaking device actuated by saidineterfollowing predetermined passage of liquid through the flow line to`eil'ect the ,opening of the third circuit and the dce-energizing ofsaid field, said circuit closing device being adjustable independentlyof the operation of said meter. l

6. ln apparatus for measuring and regulating liquid dow, a liquid dowline includin a solenoid operated valve and a dow meter, switch meanscarried by said meter, a circuit passing through said switch means andthe a manually` operated switch for closing the circuit to energize the'coil ofthe solenoid valve, and a supplemental circuit for maintainingsaid coil energized following release el the vmanually' operated meanscircuit breaking' means operated directly'by said meter followingpredetermined passage of liquid through the dow line to open the switchmeans on said meter automatically to deenergize the coil. of thesolenoid valve, and a signal adaptedto be energized byv the loperationof said switch means in the event of failure of the solenoid valve toarrest liquid dow through .sai'd'line following such predeterminedoperationof the meter. j 7. ln liquid measuring and dispensingapparatus, a li 'uid dow line, a solenoid valve in said dow ine, a dowmeter in said line, contacts carried by said meter, a circuit including`the coil of said solenoid valve, manu-y ally operated means for closingsaid circuit, a rotatable'. circuit interrupter positively driven bysaid meter and situated to enga e Y said contacts to open the circuit ofsaid solenoid following 'predetermined passage oit liquid throughthemeter, and motor driven remotelycontrolled means for returning saidinterruptor to a desired initial'position of operation-B Y Y 8. llnliquid ineasurinv and di ensin a paratus, a liquid dow Sp g p line, a..solenoid valve passing through contacts and operable to maintain thevexcitation of the field in the'starting circuit,

motor and Said interrupter, and switch de;

vices carried by said interrupter and engageable with an adjustable stopfollowing predetermined operation of the motor to open the operatingcircuit of said motor.

9. ln liquid measuring Iand dispensing apparatus', a dow meter, a shaftdriven by the operation of the How meter in response to liq uid passagethrough the meter, an arm frictionally mounted on said shaft andnormally rotatable in unison therewith, a worm gear loosely mounted onsaid shaft, a motor, a worin driven by said motor for effecting therotation of the worm gear, a sprin pressed pawl carried by said woringear an engageable with said arm to e'ect the rotation of theiarm inunison with said worm gear when g` the latter revolves in lapredetermined direction only, a motor circuit, and switch means carriedbysaid arm and enageable with an adjustable stop device to eect theopening of the motor circuit following predetermined rotation oit saidarm.

l0., ln liquid measuring and dispensing apparatus, a liquid flowregistering meter including a shalt rotatable by the passage of liquidthrouh the meter, an arm frictionally mounted on said shaft to normallyrotate with said shaft but capable of rotating' independently.transmitting mechanism driven by said motor for revolving said armabout said shaft in one direction only, a circuit for said motor,switch.. 'means carried bv said arm and through which said circuitpasses, and an adjustable stop device co-operative with said switchmeans to edect the opening of the motor circuit following predeterminedrotation of said arm. l ll. ln liquid measuring and dispensingapparatus, a liquid dow meter including a rotatable shaft movable inAresponse to liquid dowtlirough the meter,`I a circuit controlling armtrictionally mounted on said shaft adapted to rotate normally in unisonwith the shaft [but rotatabledndependently oit said shaft uponapplication of pressure, a notor, rno-A l tion transmission means drivenby said motoi` for positively effecting the rotation of said arm autsaid shaft in onepdirection, -a'circuit vter said motor, switch devicescarried by said varmthrough which said circuit passes, and a ringrotatable about the axis of the shaft, a motor, motion a laterallyprojecting stud arranged in the said. ring and the pin carried therebyath of movementJ of said switch devices to effect the opening of themotor circuit following predetermined operation of said arm.

12. In liquid measuring and dispensing apparatus, a liquid flow meterincluding a rotatable shaft movable in response to liquid flow throughthe meter, a circuit controlling arm frict1onally mounted on said shaftadapted to rotate normally/ in unison with the shaft but rotatableindependently of saidl shaft upon application of pressure, a motor,motlon transm1ss1on means drlven by sald motor for positively elfectingthe rotation of said arm about said shaft in one direction, a circuitfor said motor, switch ldevices carried by said arm through which saidcircuit passes, a ring rotatable about the axis of said shaft, said ringbeing provided with a laterally projecting stud arran Ved, in the pathof movement of said switch evices to effect the opening of the motorcircuit following predetermined operation of said arm,and:'manuallyoperated means for rotating about the axis of said shaft.

13. In liquid measuring and dispensing apparatus, a liquid flow line, asolenoid valve positioned in said flow line, a registering meterarranged-in said iow line, circuit controlling means carried inconjunction with the meter, a circuit passing through said means forgoverning the energizing of the solenoid valve, and a plurality ofmanually operated switch devices arranged remotely with respectto'saidmeter and valve and operable to control the initial energizing ofsaid valve and the restoration of the circuit controlling means on saidmeter to a repeat-- ing operating position following the automaticde-energi'zing of said valve.

14. In liquid measuring and dispensing apparatus, a liquid flow line, aflow meter arranged in said line, a solenoid valve arranged in said lineon the outlet side of said meter, a plurality of electric circuitsbetween said meter and the coil of said valve, and a plurality ofmanually operated switches arranged remotely with respect to said meterand valve and operable to Veffect first the energizing of said valve andsecond the restoration of the circuitcontrolling means on said meter toa predetermined initial position of operation following automaticde-energizing of said valve.

15. In a liquid measuring and dispensing apparatus, a liquid flow meterincludingr -a rotatable shaft movable in response to liquid flow throughthe meter, a circuit controlling arm frictionally mounted on said shaftadapted to rotate normally in unison with the shaft but rotatableindependently of said shaft upon application of pressure, a motor,motion transmission means driven by said motor for positively effectingthe rotation of said arm about said shaftin one direction, a circuit forsaid motor, switch devicescarried by said arm through which said circuitpasses, a stationary meter dial having a sight opening therein, a seconddial rotatable about the axis of said shaft and viewable through saidopening, the second dial having graduations thereon similar in number tothat of the first dial, means for effecting the rotation of said seconddial, and means formed with the latter dial and arranged in the path ofmovement of said switch devices to eect the opening of the motor circuitfollowing predetermined operation of said arm.

16. In liquid measuring and dispensing apparatus, a liquid How meterincluding a rotatable shaft movable in response to liquid flow throughthe meter, a circuit controlling arm frictionally mounted on said shaftadapted to rotate normally in unison with the shaft Ibut capableof'rotation independently thereof, a motor, motion transmission meansdriven by said motor for revolving said arm about said shaft in onedirection only, a circuitfor ment of said arm.

17. In liquid measuring and dispensing apparatus, a liquid flowregistering meter, including a shaft rotatable by liquid throughv themeter, an arm frictionally mounted on said shaft to normally rotate withsaid shaft but capable of rotation independently thereof, a motor,motion transmission mechanism driven by said motor for rethe passage ofvolving said arm about said shaft in one di'- rection only, a circuitfor said motor, switchv means carried by said arm and through which saidcircuit passes, a stationary meter dial, an adjustable stop devicearranged back of said dial to effect the opening of the motor circuitfollowing predetermined rotation of` said arm, and -means formed inconnection with said dial for determining the location of said stopdevice. In testimony whereof we aiiix our signav tures.

- FREDERIC D. PFENING.

HENRY PFENING, JR,

